3111997 has 8 divisors (see below), whose sum is σ = 3671552. Its totient is φ = 2581200.

The previous prime is 3111973. The next prime is 3112007. The reversal of 3111997 is 7991113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3111997 - 2¹⁵ = 3079229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

3111997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3111197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6954 + ... + 7387.

It is an arithmetic number, because the mean of its divisors is an integer number (458944).

Almost surely, 2^3111997 is an apocalyptic number.

It is an amenable number.

3111997 is a deficient number, since it is larger than the sum of its proper divisors (559555).

3111997 is a wasteful number, since it uses less digits than its factorization.

3111997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14379.

The product of its digits is 1701, while the sum is 31.

The square root of 3111997 is about 1764.0853153972. The cubic root of 3111997 is about 145.9978263266.

The spelling of 3111997 in words is "three million, one hundred eleven thousand, nine hundred ninety-seven".